Prepare release 4.6.1 (#186)

CHANGELOG.md

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3a9cba7..7b163a9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,4 @@
-# Unreleased
+# Release 4.6.1 (May 23, 2023)
 
 - Change deprecated `@runtime` to formal API `@runtime_checkable` in the error
   message. Patch by Xuehai Pan.

pyproject.toml

diff --git a/pyproject.toml b/pyproject.toml
index 03cdf74..fd1aeb6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,7 +6,7 @@
 # Project metadata
 [project]
 name = "typing_extensions"
-version = "4.6.0"
+version = "4.6.1"
 description = "Backported and Experimental Type Hints for Python 3.7+"
 readme = "README.md"
 requires-python = ">=3.7"